Please allow forwarding requests to DNS names

[wileyj]

/usr/local/bin/bitcoin-p2p-firewalld -n regtest -b block,cmpctblock 18332 127.0.0.1:18443

couldn't find in the code where to update to resolve DNS, but a command line like this would be very useful to have:
/usr/local/bin/bitcoin-p2p-firewalld -n regtest -b block,cmpctblock 18332 host.domain.TLD:18443

[jcnelson]

This repo has moved to https://github.com/blockstack/bitcoin-p2p-firewall. This issue is now fixed in that repo.